DE2726735A1 - Hot gas filter backflushing system - with timer sealing off filter outlets as air blasts are applied - Google Patents

Hot gas filter backflushing system - with timer sealing off filter outlets as air blasts are applied

Info

Publication number
DE2726735A1
DE2726735A1 DE19772726735 DE2726735A DE2726735A1 DE 2726735 A1 DE2726735 A1 DE 2726735A1 DE 19772726735 DE19772726735 DE 19772726735 DE 2726735 A DE2726735 A DE 2726735A DE 2726735 A1 DE2726735 A1 DE 2726735A1
Authority
DE
Germany
Prior art keywords
filter
filters
timer
compressed air
outlets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19772726735
Other languages
German (de)
Inventor
Heinrich Gresch
Heinz Hoelter
Heinrich Igelbuescher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19772726735 priority Critical patent/DE2726735A1/en
Publication of DE2726735A1 publication Critical patent/DE2726735A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/90—Devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration or maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/20—High temperature filtration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A backflushing device for hot gas filters has power cylinders on the filter casing which are actuated by a timer to press sealing discs with compressed air blast tubes against the clean gas outlet of the bag filters in a certain cycle. The air supply to the blast tubes is controlled by the same timer. In the filtering time of the cycle, compression springs keep the sealing discs at an adequate distance from the filter outlets. This is a simple way of overcoming the backflushing problem and to seal the filters for best blasting efficiency, when no elastomer seals are permitted, like in hot gas filters. The bag filters are arranged in the filter casing with an inlet for hot gases and a worm conveyor for the discharge of dust. Normally, compression springs keep the sealing discs of the clean gas outlets of the filter bags. When a timer admits compressed air at certain intervals to the pipes, power cylinders press the sealing discs with the distributor pipe and the air blast tubes against the bag filter outlets and air blasts through the tubes flake off any dust deposits from the bag filters.

Description

Beschreibung und Erläuterung zurDescription and explanation of the

Patent- und Hilf sgebrauchsmusteranmeldung "Vorrichtung zur Abreinigung von vorzugsweise Heiß-Gas-Filtern" Es ist bekannt, Filtertaschen oder beliebig geformte Filtertücher durch Blasluft von der Reingasseite her kommend mittels Luftspülung oder ~Druckluft schock zu reinigen.Patent and utility model registration "Device for cleaning of preferably hot gas filters "It is known, filter bags or any shaped Filter cloths coming from the clean gas side by blowing air by means of air purging or ~ to clean compressed air shock.

Zum Anschluß der einzelnen Filterkörper werden vorzugsweise ganze Kammern mittels Lappen abgeschaltet.To connect the individual filter bodies are preferably whole Chambers switched off with a cloth.

Um mittels einfachster Bauweise einzelne oder mehrere Filterkörper mittels Luft abzureinigen, insbesondere bei Heißgasfiltern, wo gummiförmige Dichtelemente nicht benutzt werden können, wird erfindungsgemäß vorgeschlagen Vorrichtung entsprechend beiliegender Skizze und nachstehender Beschreibung zu verwenden.In order to use the simplest construction method, single or multiple filter bodies to be cleaned with air, especially with hot gas filters, where rubber-shaped sealing elements can not be used, the invention proposes a device accordingly The enclosed sketch and the following description are to be used.

In der beiliegenden Skizze ist dargestellt: mit 1) das Filtergehäuse mit 2) die Staubaustragsförderschnecke mit 3) der Staubaustrag mit 4) der Rohgaseintrittsstutzen mit 5) die Filterkörperelemente, z.B. Topffilter mit 6) Hubzylinder, die mit Druckfedern 7 versehen sind mit 8) Blasstutzen, die in die einzelnen Filterkörper hineinragen mit 9) Dichtteller mit 10) ein Druckluftverteilerrohr mit 11) der flexible Schlauchanschluß mit Zeitventil für das Druckluftverteilerrohr, mit 12) flexibler DruckluftanschluB- Schlauch mit Zeitventil für die Hubzylinder 6.The attached sketch shows: with 1) the filter housing with 2) the dust discharge screw conveyor with 3) the dust discharge with 4) the raw gas inlet nozzle with 5) the filter body elements, e.g. pot filters with 6) lifting cylinders, those with compression springs 7 are provided with 8) blower nozzles that protrude into the individual filter bodies with 9) sealing plate with 10) a compressed air distribution pipe with 11) the flexible hose connection with time valve for the compressed air distribution pipe, with 12) flexible compressed air connection Hose with time valve for the lifting cylinders 6.

Arbeitsweise der erfindungsgeraßen Vorrichtung: Das Rohgas tritt bei 4 in das Filtergehäuse 1 ein und wird über die Filterkörper 5 gereinigt.Operation of the device according to the invention: The raw gas occurs 4 into the filter housing 1 and is cleaned via the filter body 5.

Das Reingas tritt unterhalb der Dichtteller 9, die in einigen Zentimetern abstand vom Austritt der Filterkörper entfernt am Blasstutzen 8 angebracht sind, aus.The clean gas occurs below the sealing plate 9, which is a few centimeters at a distance from the outlet the filter body is attached to the blow nozzle 8, the end.

Entsprechend der Rohgasbelastung wird der Filterkörper 5 mit Staub beaufschlagt und bildet eine Staub schicht auf dem Filterkörper.According to the raw gas load, the filter body 5 is covered with dust applied and forms a layer of dust on the filter body.

Um den Topffilter 5 beim Einblasen von fülluft oder Druckluftschock gegen den Austritt der gereinigten Luft abzuschließen, um die Spülluft voll wirksam werden zu lassen, ist erfindungsgemäß das Druckluftverteilerrohr 10 mit den Zylindern 6 gekuppelt.To the pot filter 5 when blowing in filling air or compressed air shock complete against the outlet of the cleaned air in order to make the purge air fully effective According to the invention, the compressed air distribution pipe 10 with the cylinders is to be let 6 coupled.

liormalerweise wird durch die Druckfeder 7 der oder die Zylinder 6 mit ihrer Kolbenstange das Druckluftverteilerrohr 10 mit dem Dichtteller 9 und dem Blasstutzen 8 hochhalten, so daß ein genügend freier Raum zwischen dem Dichtteller 9 und dem der Filterkörperöffnung den Reingasaustritt offenläßt.Usually, the cylinder or cylinders 6 with its piston rod, the compressed air distribution pipe 10 with the sealing plate 9 and the Hold up the blow nozzle 8 so that there is enough free space between the sealing plate 9 and that of the filter body opening leaves the clean gas outlet open.

Durch die Druckluftzufiihrung 12, die über einen flexiblen Anschluß, z.B. Schlauch, gestaltet wird, werden die Zylinder-Eolben 6 oberhalb der Feder 7 beaufschlagt und dr#cken, über ein Zeitrelais gesteuert, das Druckluftverteilerrohr 10 mit den Dichtteller 9 auf die Öffnung der Filterkörper 5, so daß der Blasstutzen in den Filterkörper eintaucht.Through the compressed air supply 12, which via a flexible connection, e.g. hose, the cylinder pistons 6 are above the spring 7 pressurized and controlled by a time relay, the compressed air distribution pipe 10 with the sealing plate 9 on the opening of the filter body 5, so that the blow nozzle immersed in the filter body.

titer ein Zeitrelais und über den flexiblen Jchlauchanschluß 11 wird Druckluft in das Druckluftverteilerrohr 10 aufgegeben, und die Druckluft strömt über die Blasstutzen 8 in die verschloosenen Filterkörper 5 ein und bewirkt hier ein Abplatzen des angesetzten Filterkuchens auf der Rohgasseite des Filterkörpers.titer a time relay and via the flexible hose connection 11 Compressed air given into the compressed air distribution pipe 10, and the compressed air flows via the blow nozzle 8 into the closed filter body 5 and causes here flaking of the attached filter cake on the raw gas side of the filter body.

Mit dieser Kombination Druckluftverteilerrohr 10 mit angesetzten Blasstutzen 8 und Dichtteller 9 über Zeitrelais-Schaltung ist die Gewähr gegeben, daß bei entsprechendem Druckanstieg der belastete Filter durch diese Vorrichtung zur Abreinigung auch bei ausströmendem Heißgas eine Reinigung bewirkt.With this combination, compressed air distribution pipe 10 with attached blower nozzle 8 and sealing plate 9 via time relay circuit, the guarantee is given that with appropriate Pressure increase of the loaded filter by this device for cleaning also with outflowing hot gas causes a cleaning.

Die Zylinder 6 und die Druckluftverteilerrohranordnung 10 ist mit kleinen Bohrungen versehen, so daß nach Unterbrechung der Druckluft zufuhr die Feder 7 voll zur Wirkung kommt und die Dichtteller 9 anhebt.The cylinder 6 and the compressed air distribution pipe assembly 10 is with Provided small holes so that the spring is fed in after the compressed air is interrupted 7 comes into full effect and the sealing plate 9 lifts.

L e e r s e i t eL e r s e i t e

Claims (1)

Anspruch I Vorrichtung zur Reinigung von vorzugsweise Hei@gasfiltern dadurch gekennzeichnet, daß am Filtergch@use 1 Hubzylinder 6 angebracht sind, die Mittels Federn 7 die Lolbenstangen, die mit dem rucluftverteilerrohr 10 in Verbindung stehen, voa Ausgang der Filterkörper 5 soweit fernhalten, daß der Dichtteller 9 mit den Blasstutzen 8 keinen Verschluß gegen den wiltcrkörper oder die Filterkörper 5 bildet.Claim I device for cleaning preferably Hei @ gas filters characterized in that 1 lifting cylinder 6 are attached to the Filtergch @ use, the By means of springs 7 the Lolbenstangen, which are connected to the air distribution pipe 10 stand, voa the outlet of the filter body 5 so far away that the sealing plate 9 with the blow nozzle 8 no closure against the wiltcrkörper or the filter body 5 forms. Anspruch II Vorrichtung zur Reinigung von vorzugsweise I1eißgasfiltern nach Anspruch I dadurch gekennzeichnet, daß die Luftzufubrleitungen 11 für den Druckluftverteiler und 12 für die Hubzylinder flexibel ausgebildet und mit Zeitrelaisventilen versehen sind, die vorzugsweise in Abhängigkeit vom Filterwiderstand die Druckluftzuführung öffnen oder schließen.Claim II device for cleaning preferably white gas filters according to claim I, characterized in that the air supply lines 11 for the compressed air distributor and 12 designed to be flexible for the lifting cylinders and provided with timing relay valves which are preferably the compressed air supply depending on the filter resistance open or close.
DE19772726735 1977-06-14 1977-06-14 Hot gas filter backflushing system - with timer sealing off filter outlets as air blasts are applied Pending DE2726735A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772726735 DE2726735A1 (en) 1977-06-14 1977-06-14 Hot gas filter backflushing system - with timer sealing off filter outlets as air blasts are applied

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772726735 DE2726735A1 (en) 1977-06-14 1977-06-14 Hot gas filter backflushing system - with timer sealing off filter outlets as air blasts are applied

Publications (1)

Publication Number Publication Date
DE2726735A1 true DE2726735A1 (en) 1979-01-04

Family

ID=6011485

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
DE (1) DE2726735A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462190A1 (en) * 1979-07-26 1981-02-13 Cepem Air-filter unblocking appts. - comprising pneumatic vibrator operating inside the filter element
DE3341786A1 (en) * 1983-11-17 1985-06-20 Delbag-Luftfilter Gmbh, 1000 Berlin Filter unit cleanable with compressed air for removing dust or sand from the air
DE3620489A1 (en) * 1985-06-27 1987-01-08 Waagner Biro Ag Process and device for cleaning flat filter elements
DE3941321A1 (en) * 1989-12-14 1991-06-20 Herbert Huettlin Filter arrangement - for dust removal from gases
DE4429987A1 (en) * 1994-08-24 1996-02-29 Kemper Gerd Cleaning filter during cleaning phase
US5948127A (en) * 1996-11-12 1999-09-07 Japan Nuclear Cycle Development Institute Cyclone dust collector
WO2006045898A1 (en) * 2004-10-27 2006-05-04 Sandvik Mining And Construction Oy Arrangement for cleaning filter apparatus of rock drilling rig

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462190A1 (en) * 1979-07-26 1981-02-13 Cepem Air-filter unblocking appts. - comprising pneumatic vibrator operating inside the filter element
DE3341786A1 (en) * 1983-11-17 1985-06-20 Delbag-Luftfilter Gmbh, 1000 Berlin Filter unit cleanable with compressed air for removing dust or sand from the air
DE3620489A1 (en) * 1985-06-27 1987-01-08 Waagner Biro Ag Process and device for cleaning flat filter elements
DE3941321A1 (en) * 1989-12-14 1991-06-20 Herbert Huettlin Filter arrangement - for dust removal from gases
DE3941321C2 (en) * 1989-12-14 1993-10-14 Herbert Huettlin Filter arrangement for dedusting gases
DE4429987A1 (en) * 1994-08-24 1996-02-29 Kemper Gerd Cleaning filter during cleaning phase
US5948127A (en) * 1996-11-12 1999-09-07 Japan Nuclear Cycle Development Institute Cyclone dust collector
CN1061566C (en) * 1996-11-12 2001-02-07 核燃料循环开发机构 cyclone dust collector
WO2006045898A1 (en) * 2004-10-27 2006-05-04 Sandvik Mining And Construction Oy Arrangement for cleaning filter apparatus of rock drilling rig

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